clyamsr250

I'm looking for some engine parts for my 95 SR250 (3Y9 engine). Can't find any specfic info on part nos, plenty of info on the early 80's bikes especially the 249cc (3Y6?). It's mainly top end parts, does any one know whether the 80's 239cc (3Y8?) engine top end is the same as the 93-96 top end?? Seem to be some secondhand bits around from early 80's bikes but don't know if they would be compatible, any help appreciated!